Aura Colors
Learning to see and understand the auras of people can help a psychic vampire. Most psy vampires can see the aura pretty naturally but it takes practice to understand them and see the colors clearly. I know that I can certainly feel the energy field of a person and pick up on their emotional energy empathically. This is something that I am working to improve in my own abilities. Here is a list of colors and meanings that I found sounds the most accurate to me.
Aura Colors
Auras are the physical manifestation of the electric field surrounding each and every living thing
White
A lot of energy being sensed. (I have noticed people with a large amount of energy have very bright auras)
Red
Physical Energy; physically-based person personality or sensuality. Harsh reds tend to indicate emotionally charged physical animation, usually anger. Warm reds, sensuous, or physically charged and healthy.
Orange
Friendly, open, approachable
Yellow
Intellectual, thinking, working faculties.
Green
Healthy, balanced, calming, charming, sensualness, sensible or conniving.
Blue
Intellect but calm reserved, spiritual, convinced; sometimes an integrated personality exuding charisma.
Violet
Spiritual, sensitive, focused but not necessarily in reality.
Purple
It is a combination of Blue and Red, a mixed bag and a spectrum of what it could be.
Pink
Physical energy being diffused, hence it is a calming color.
Lime Green
Not many have this color and are balanced; usually stress-related.
Brown
Work with this color to get a feel for it. Could be warm rich and well integrated person, or a one who is unhealthy, or just to much going on (different types of stress).
Black
Nothing getting out, shielding or hiding. Total absorption. Do you feel tired? Do you feel the world sucking around you? Or is it like a flat black but you sense a scintillation of your own energy being diffused out? In other words, is there a metallic tint? If you feel drained, it could be a "psychic vampire". Otherwise, it may be someone who is very skilled who doesn't want to be noticed, scanned or bothered. Usually the colors when viewed with these people tend to be more metallic. Many people misinterpret these also.
Mixed shades
(Like mixed reds) Mixed emotion. Stability should be questioned. Generally not based in reality